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12000220212 = 2233742616343
BaseRepresentation
bin10110010110100010…
…01101010000110100
31010222022112100102110
423023101031100310
5144034024021322
65302434211020
7603243121521
oct131321152064
933868470373
1012000220212
1150a88a2072
1223aaa23a70
131193210b26
1481ba78148
154a37b5c0c
hex2cb44d434

12000220212 has 48 divisors (see below), whose sum is σ = 28768568192. Its totient is φ = 3890436480.

The previous prime is 12000220157. The next prime is 12000220223. The reversal of 12000220212 is 21202200021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888713 + ... + 1895055.

Almost surely, 212000220212 is an apocalyptic number.

12000220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12000220212 is an abundant number, since it is smaller than the sum of its proper divisors (16768347980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12000220212 is a wasteful number, since it uses less digits than its factorization.

12000220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648 (or 10646 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12000220212 its reverse (21202200021), we get a palindrome (33202420233).

The spelling of 12000220212 in words is "twelve billion, two hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 444 4261 6343 8522 12686 12783 17044 19029 25372 25566 38058 51132 76116 157657 234691 315314 469382 472971 630628 704073 938764 945942 1408146 1891884 2816292 27027523 54055046 81082569 108110092 162165138 324330276 1000018351 2000036702 3000055053 4000073404 6000110106 12000220212